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Ultrasonic angioplasty-atherectomy catheter and method of use

  • US 5,916,192 A
  • Filed: 02/13/1995
  • Issued: 06/29/1999
  • Est. Priority Date: 01/11/1991
  • Status: Expired due to Term
First Claim
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1. An ultrasonic device for removing obstructive matter from an anatomical passageway, said device comprising:

  • an elongate pliable catheter body having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough;

    a distal tip member fixedly attached to the distal end of said catheter body for engaging the obstructive matter, the distal tip member having a length selected so that the entire distal tip member is contained within the distal end of the catheter body, said distal tip member having a distal surface;

    an ultrasound transmission member extending longitudinally through said catheter body to transmit ultrasound from an ultrasound source located adjacent the proximal end of said catheter body, through said catheter body, to said distal tip member; and

    at least one aspiration passageway extending longitudinally through said distal tip member from the proximal surface thereof to the distal surface thereof, said aspiration passageway being in communication with a lumen of said catheter such that matter located at the distal tip member may be aspirated, in the proximal direction, through said passageway and through said lumen of said catheter.

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